LR-META-XMP: Retry automatic XMP sidecar writes that failed

A sidecar write that failed because the folder was offline or read-only was only logged. Keep those photos waiting, write them again once their files are reachable, and tell the user.

crates/engine/src/cmd/xmp.rs

@@ -108,6 +108,18 @@ pub fn specs() -> Vec<CommandSpec> {
             always,
             prefs
         ),
+        cmd!(
+            "library.retrySidecars",
+            "Write Waiting XMP Sidecars",
+            [],
+            None,
+            "{} — writes again the automatic XMP sidecars that failed (folder offline, read-only or full) whose originals are reachable now → {written, waiting}",
+            always,
+            |s, _| {
+                let written = s.retry_unsaved_sidecars();
+                Ok(json!({"written": written, "waiting": s.unsaved_sidecars()}))
+            }
+        ),
         cmd!("library.toggleAutoWriteXmp", "Automatically Write Changes into XMP", ["File"], None, "{} → {autoWrite}", always, |s, _| {
             let on = !s.xmp.auto_write;
             prefs(s, &json!({"autoWrite": on}))

crates/engine/src/lib.rs

@@ -206,6 +206,9 @@ pub struct Session {
     /// Set by a command whose change must not rewrite the photo's XMP sidecar even with auto-write on
     /// (a catalog-only edit of data the sidecar writer does not emit); consumed when the command ends.
     pub(crate) skip_auto_write: bool,
+    /// Photos whose automatic XMP sidecar write failed (their folder offline, read-only or full), written again by
+    /// [`Session::retry_unsaved_sidecars`] once their file is reachable.
+    pub(crate) unsaved_sidecars: std::collections::BTreeSet<PhotoId>,
     /// AI denoise: the model in use, the photos that have their picture and the work in progress.
     pub(crate) denoise: denoise::State,
     /// Where the host keeps face models (one folder each); `None` where there is no file system (the web).
@@ -353,6 +356,7 @@ impl Session {
             pending_sidecar_repairs: Vec::new(),
             interaction: None,
             skip_auto_write: false,
+            unsaved_sidecars: Default::default(),
             denoise: Default::default(),
             face_models_dir: None,
             face_downloads: Default::default(),

crates/engine/src/sidecar.rs

@@ -713,13 +713,61 @@ impl Session {
         }
         let owners = StemOwners::among(&self.catalog, &ids);
         for id in ids {
-            if self.catalog.photo(id).is_some_and(|p| file_path(p).is_some() && p.copy_of.is_none())
-                && let Err(e) = self.save_sidecar_with(id, &owners)
-            {
-                log::warn!("auto-write XMP: {e}");
+            if self.catalog.photo(id).is_some_and(|p| file_path(p).is_some() && p.copy_of.is_none()) {
+                match self.save_sidecar_with(id, &owners) {
+                    Ok(_) => {
+                        self.unsaved_sidecars.remove(&id);
+                    }
+                    Err(e) => {
+                        // kept for a retry once the file is reachable: a network share that dropped out mustn't leave
+                        // the sidecar silently behind the edit
+                        log::warn!("auto-write XMP: {e}");
+                        self.unsaved_sidecars.insert(id);
+                    }
+                }
             }
         }
     }
+
+    /// How many photos have an automatic sidecar write waiting (it failed: the folder offline, read-only or full).
+    pub fn unsaved_sidecars(&self) -> usize {
+        self.unsaved_sidecars.len()
+    }
+
+    /// Write the waiting sidecars whose originals are reachable again (the availability cache answers without
+    /// touching the disk for the others); photos that are gone, or with auto-write off, are dropped from the wait.
+    /// Returns how many were written.
+    pub fn retry_unsaved_sidecars(&mut self) -> usize {
+        if !self.xmp.auto_write {
+            self.unsaved_sidecars.clear();
+            return 0;
+        }
+        let mut ready = Vec::new();
+        for id in self.unsaved_sidecars.clone() {
+            match self.catalog.photo(id).filter(|p| p.copy_of.is_none()).and_then(|p| file_path(p).map(str::to_owned)) {
+                None => {
+                    self.unsaved_sidecars.remove(&id);
+                }
+                Some(path) if self.media.availability.exists(&path) == Some(true) => ready.push(id),
+                Some(_) => {}
+            }
+        }
+        if ready.is_empty() {
+            return 0;
+        }
+        let owners = StemOwners::among(&self.catalog, &ready);
+        let mut written = 0;
+        for id in ready {
+            match self.save_sidecar_with(id, &owners) {
+                Ok(_) => {
+                    self.unsaved_sidecars.remove(&id);
+                    written += 1;
+                }
+                Err(e) => log::debug!("retry XMP: {e}"),
+            }
+        }
+        written
+    }
 }
 
 #[cfg(test)]

crates/engine/src/tests_xmp.rs

@@ -1209,3 +1209,42 @@ fn files_sharing_a_stem_get_their_own_sidecars() {
     let _ = std::fs::remove_dir_all(&src);
     let _ = std::fs::remove_dir_all(&lib);
 }
+
+/// An automatic sidecar write that fails (here the folder is read-only, as a network share that dropped out or went
+/// read-only) waits instead of being forgotten, and `library.retrySidecars` writes it once the folder takes writes
+/// again.
+#[cfg(unix)]
+#[test]
+fn a_failed_auto_write_waits_and_is_written_on_retry() {
+    use std::os::unix::fs::PermissionsExt;
+    let src = temp_dir("auto-retry");
+    write_png(&src.join("a.png"), 4);
+    let mut s = Session::new().with_fs();
+    s.execute("library.import", &json!({"paths": [src.to_string_lossy()]})).unwrap();
+    s.execute("library.xmpPreferences", &json!({"autoWrite": true})).unwrap();
+    std::fs::set_permissions(&src, std::fs::Permissions::from_mode(0o555)).unwrap();
+    // (root writes anyway: nothing to test there)
+    if std::fs::write(src.join(".probe"), b"x").is_ok() {
+        std::fs::set_permissions(&src, std::fs::Permissions::from_mode(0o755)).unwrap();
+        return;
+    }
+    s.execute("photo.rate", &json!({"rating": 4})).unwrap();
+    let sidecar = src.join("a.xmp");
+    assert!(!sidecar.exists());
+    assert_eq!(s.unsaved_sidecars(), 1, "the failed write waits");
+    let r = s.execute("library.retrySidecars", &json!({})).unwrap();
+    assert_eq!(r, json!({"written": 0, "waiting": 1}), "still read-only");
+    std::fs::set_permissions(&src, std::fs::Permissions::from_mode(0o755)).unwrap();
+    let r = s.execute("library.retrySidecars", &json!({})).unwrap();
+    assert_eq!(r, json!({"written": 1, "waiting": 0}));
+    assert!(std::fs::read_to_string(&sidecar).unwrap().contains("<xmp:Rating>4</xmp:Rating>"));
+    // a later edit that writes fine leaves nothing waiting; turning auto-write off drops what still waits
+    std::fs::set_permissions(&src, std::fs::Permissions::from_mode(0o555)).unwrap();
+    s.execute("photo.rate", &json!({"rating": 3})).unwrap();
+    assert_eq!(s.unsaved_sidecars(), 1);
+    s.execute("library.xmpPreferences", &json!({"autoWrite": false})).unwrap();
+    s.execute("library.retrySidecars", &json!({})).unwrap();
+    assert_eq!(s.unsaved_sidecars(), 0);
+    std::fs::set_permissions(&src, std::fs::Permissions::from_mode(0o755)).unwrap();
+    let _ = std::fs::remove_dir_all(&src);
+}

crates/ui-egui/locales/de-formats.json

@@ -61,6 +61,7 @@
   "Import cancelled · {} photo{} added": "Import abgebrochen · {} Foto{} hinzugefügt",
   "Import failed: {e}": "Import fehlgeschlagen: {e}",
   "Import warnings ({n}):\n{warnings}": "Importwarnungen ({n}):\n{warnings}",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "Die XMP-Begleitdateien von {n} Fotos konnten nicht geschrieben werden (ist ihr Ordner offline?). LightCraft versucht es weiter.",
   "XMP profile \"{profile}\" was not applied for {path}; colors may differ from Lightroom.": "XMP-Profil \"{profile}\" wurde für {path} nicht angewendet; Farben können von Lightroom abweichen.",
   "Lightroom geometry was not preserved for {path}; {mode} will be recalculated.": "Lightroom-Geometrie wurde für {path} nicht beibehalten; {mode} wird neu berechnet.",
   "Lightroom geometry for {path} was not preserved; saved transform is ignored because Upright is Off.": "Lightroom-Geometrie für {path} wurde nicht beibehalten; gespeicherte Transformation wird ignoriert, weil Upright deaktiviert ist.",

crates/ui-egui/locales/de.json

@@ -1617,6 +1617,7 @@
   "Window": "Fenster",
   "Winter Blue": "Winterblau",
   "Without Saving and Quit (issue #100). It no longer quietly starts a demo session that looked like a reset library and": "Ohne Speichern fortfahren und Beenden (Issue #100). Sie startet keine unbemerkte Demo-Sitzung mehr, die wie eine zurückgesetzte Bibliothek wirkte und",
+  "Wrote the XMP sidecars that were waiting": "Ausstehende XMP-Begleitdateien geschrieben",
   "XMP Sidecar Preferences": "Einstellungen für XMP-Begleitdateien",
   "XMP sidecars": "XMP-Begleitdateien",
   "Year": "Jahr",

crates/ui-egui/locales/es-formats.json

@@ -61,6 +61,7 @@
   "Import cancelled · {} photo{} added": "Importación cancelada · {0} foto{1} añadida{1}",
   "Import failed: {e}": "Error de importación: {e}",
   "Import warnings ({n}):\n{warnings}": "Avisos de importación ({n}):\n{warnings}",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "No se pudieron escribir los archivos XMP de {n} fotos (¿su carpeta está desconectada?). LightCraft lo sigue intentando.",
   "XMP profile \"{profile}\" was not applied for {path}; colors may differ from Lightroom.": "El perfil XMP \"{profile}\" no se aplicó a {path}; los colores pueden diferir de Lightroom.",
   "Lightroom geometry was not preserved for {path}; {mode} will be recalculated.": "La geometría de Lightroom no se conservó para {path}; {mode} se recalculará.",
   "Lightroom geometry for {path} was not preserved; saved transform is ignored because Upright is Off.": "La geometría de Lightroom no se conservó para {path}; la transformación guardada se ignora porque Vertical está desactivado.",

crates/ui-egui/locales/es.json

@@ -1581,6 +1581,7 @@
   "Will be restored": "Se restaurará",
   "Window": "Ventana",
   "Winter Blue": "Azul invernal",
+  "Wrote the XMP sidecars that were waiting": "Se escribieron los archivos XMP pendientes",
   "XMP Sidecar Preferences": "Preferencias de archivos XMP complementarios",
   "XMP sidecars": "Archivos XMP complementarios",
   "Year": "Año",

crates/ui-egui/locales/fr-formats.json

@@ -65,6 +65,7 @@
   "Imported {n} preset{}": "{n} préréglage{} importé(s)",
   "Imported {n} preset{}, {f} file{} not readable": "{n} préréglage{} importé(s), {f} fichier{} illisible(s)",
   "Imported {profiles} profile{} (Profile browser ▸ their groups)": "{profiles} profil{} importé(s) (Navigateur de profils → leurs groupes)",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "Les fichiers annexes XMP de {n} photos n'ont pas pu être écrits (leur dossier est-il hors ligne ?). LightCraft continue d'essayer.",
   "XMP profile \"{profile}\" was not applied for {path}; colors may differ from Lightroom.": "Le profil XMP « {profile} » n’a pas été appliqué à {path} ; les couleurs peuvent différer de Lightroom.",
   "Lightroom geometry was not preserved for {path}; {mode} will be recalculated.": "La géométrie Lightroom de {path} n’a pas été conservée ; {mode} sera recalculé.",
   "Lightroom geometry for {path} was not preserved; saved transform is ignored because Upright is Off.": "La géométrie Lightroom de {path} n’a pas été conservée ; la transformation enregistrée est ignorée, car Upright est désactivé.",

crates/ui-egui/locales/fr.json

@@ -1543,6 +1543,7 @@
   "Will be restored": "Sera restaurée",
   "Window": "Fenêtre",
   "Winter Blue": "Bleu hivernal",
+  "Wrote the XMP sidecars that were waiting": "Fichiers annexes XMP en attente écrits",
   "XMP Sidecar Preferences": "Préférences des fichiers annexes XMP",
   "XMP sidecars": "Fichiers annexes XMP",
   "Year": "Année",

crates/ui-egui/locales/ja-formats.json

@@ -66,6 +66,7 @@
   "Show {hidden} hidden location{}": "非表示の{hidden}か所を表示{:.0}",
   "Showing {n} of {}": "{}枚中{n}枚を表示",
   "Smart album: {}": "スマートアルバム：{}",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "{n} 枚の写真の XMP サイドカーを書き込めませんでした（フォルダーがオフラインではありませんか？）。LightCraft は再試行を続けます。",
   "Undo {}": "取り消す：{}",
   "Version {} — a clean-room, pure-Rust photo library and raw developer.": "バージョン{} — Rust製の写真管理・RAW現像アプリ",
   "Version: {}": "バージョン：{}",

crates/ui-egui/locales/ja.json

@@ -1471,6 +1471,7 @@
   "Will be restored": "復元されます",
   "Window": "ウィンドウ",
   "Winter Blue": "ウィンターブルー",
+  "Wrote the XMP sidecars that were waiting": "保留中の XMP サイドカーを書き込みました",
   "XMP Sidecar Preferences": "XMPサイドカーファイルの環境設定",
   "XMP sidecars": "XMPサイドカーファイル",
   "Year": "年",

crates/ui-egui/locales/pt-br-formats.json

@@ -87,6 +87,7 @@
   "Show {hidden} hidden location{}": "Mostrar {hidden} local(is) oculto(s){:.0}",
   "Showing {n} of {}": "Mostrando {n} de {}",
   "Smart album: {}": "Álbum inteligente: {}",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "Não foi possível gravar os arquivos XMP de {n} fotos (a pasta está offline?). O LightCraft continua tentando.",
   "Undo {}": "Desfazer {}",
   "Updated “{name}”": "“{name}” atualizado",
   "Version {} — a clean-room, pure-Rust photo library and raw developer.": "Versão {} — uma biblioteca de fotos e revelador RAW em Rust puro, desenvolvida de forma independente.",

crates/ui-egui/locales/pt-br.json

@@ -1566,6 +1566,7 @@
   "Will be restored": "Será restaurada",
   "Window": "Janela",
   "Winter Blue": "Azul invernal",
+  "Wrote the XMP sidecars that were waiting": "Os arquivos XMP pendentes foram gravados",
   "XMP Sidecar Preferences": "Preferências de sidecar XMP",
   "XMP sidecars": "Sidecars XMP",
   "Year": "Ano",

crates/ui-egui/locales/ru-formats.json

@@ -64,6 +64,7 @@
   "Import cancelled · {} photo{} added": "Импорт отменён · добавлено фото: {}{:.0}",
   "Import failed: {e}": "Ошибка импорта: {e}",
   "Import warnings ({n}):\n{warnings}": "Предупреждения импорта ({n}):\n{warnings}",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "Не удалось записать XMP-файлы {n} фото (папка недоступна?). LightCraft продолжает попытки.",
   "XMP profile \"{profile}\" was not applied for {path}; colors may differ from Lightroom.": "Профиль XMP \"{profile}\" не применён к {path}; цвета могут отличаться от Lightroom.",
   "Lightroom geometry was not preserved for {path}; {mode} will be recalculated.": "Геометрия Lightroom для {path} не сохранена; режим {mode} будет пересчитан.",
   "Lightroom geometry for {path} was not preserved; saved transform is ignored because Upright is Off.": "Геометрия Lightroom для {path} не сохранена; сохранённое преобразование игнорируется, поскольку Upright выключен.",

crates/ui-egui/locales/ru.json

@@ -1309,6 +1309,7 @@
   "Width × Height": "Ширина × высота",
   "Window": "Окно",
   "Winter Blue": "Зимняя синева",
+  "Wrote the XMP sidecars that were waiting": "Ожидавшие XMP-файлы записаны",
   "XMP Sidecar Preferences": "Настройки XMP-файлов",
   "XMP sidecars": "XMP-файлы",
   "Year": "Год",

crates/ui-egui/locales/uk-formats.json

@@ -65,6 +65,7 @@
   "Imported {n} preset{}": "Імпортовано наборів налаштувань: {n}{:.0}",
   "Imported {n} preset{}, {f} file{} not readable": "Імпортовано наборів налаштувань: {n}{:.0}, файлів не читається: {f}{:.0}",
   "Imported {profiles} profile{} (Profile browser ▸ their groups)": "Імпортовано профілів: {profiles}{:.0} (Оглядач профілів → їхні групи)",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "Не вдалося записати XMP-файли {n} фото (папка недоступна?). LightCraft продовжує спроби.",
   "XMP profile \"{profile}\" was not applied for {path}; colors may differ from Lightroom.": "Профіль XMP «{profile}» не застосовано до {path}; кольори можуть відрізнятися від Lightroom.",
   "Lightroom geometry was not preserved for {path}; {mode} will be recalculated.": "Геометрію Lightroom для {path} не збережено; режим {mode} буде перераховано.",
   "Lightroom geometry for {path} was not preserved; saved transform is ignored because Upright is Off.": "Геометрію Lightroom для {path} не збережено; збережене перетворення ігнорується, оскільки Upright вимкнено.",

crates/ui-egui/locales/uk.json

@@ -305,6 +305,7 @@
   "Whites": "Білі тони",
   "Width": "Ширина",
   "Window": "Вікно",
+  "Wrote the XMP sidecars that were waiting": "XMP-файли, що очікували, записано",
   "Yellow": "Жовтий",
   "Yes": "Так",
   "Zoom": "Масштаб",

crates/ui-egui/locales/zh-hans-formats.json

@@ -66,6 +66,7 @@
   "Show {hidden} hidden location{}": "显示 {hidden} 个隐藏位置{0:.0}",
   "Showing {n} of {}": "显示 {0} 张中的 {n} 张",
   "Smart album: {}": "智能相册：{0}",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "无法写入 {n} 张照片的 XMP 附属文件（其文件夹是否离线？）。LightCraft 会继续重试。",
   "Undo {}": "撤销 {0}",
   "Version {} — a clean-room, pure-Rust photo library and raw developer.": "版本 {0} — 净室实现的纯 Rust 照片图库与 RAW 编辑工具。",
   "Version: {}": "版本：{0}",

crates/ui-egui/locales/zh-hans.json

@@ -1547,6 +1547,7 @@
   "Will be restored": "将恢复",
   "Window": "窗口",
   "Winter Blue": "冬日蓝调",
+  "Wrote the XMP sidecars that were waiting": "已写入等待中的 XMP 附属文件",
   "XMP Sidecar Preferences": "XMP 附属文件偏好设置",
   "XMP sidecars": "XMP 附属文件",
   "Year": "年",

crates/ui-egui/locales/zh-hant-formats.json

@@ -83,6 +83,7 @@
   "Show {hidden} hidden location{}": "顯示 {hidden} 個隱藏的位置{:.0}",
   "Showing {n} of {}": "顯示 {n}／{} 張",
   "Smart album: {}": "智慧型相簿：{}",
+  "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.": "無法寫入 {n} 張照片的 XMP 附屬檔案（其資料夾是否離線？）。LightCraft 會持續重試。",
   "Undo {}": "復原 {}",
   "Updated “{name}”": "已更新「{name}」",
   "Version {} — a clean-room, pure-Rust photo library and raw developer.": "版本 {} — 以純 Rust 獨立實作的照片管理與 RAW 顯像程式。",

crates/ui-egui/locales/zh-hant.json

@@ -1547,6 +1547,7 @@
   "Will be restored": "將還原",
   "Window": "視窗",
   "Winter Blue": "冬日藍調",
+  "Wrote the XMP sidecars that were waiting": "已寫入等待中的 XMP 附屬檔案",
   "XMP Sidecar Preferences": "XMP 附屬檔案偏好設定",
   "XMP sidecars": "XMP 附屬檔案",
   "Year": "年",

crates/ui-egui/src/lib.rs

@@ -1092,6 +1092,33 @@ impl LightcraftApp {
             }
             ctx.request_repaint_after(std::time::Duration::from_secs(3));
         }
+        // automatic XMP writes that failed (a network share offline): tried again every few seconds once their files
+        // are reachable, and said once when they start waiting and once when they're written
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            if self.session.unsaved_sidecars() > 0 {
+                let now = ctx.input(|i| i.time);
+                if now - self.ui.sidecar_retry_at >= 10.0 {
+                    self.ui.sidecar_retry_at = now;
+                    self.session.retry_unsaved_sidecars();
+                }
+                ctx.request_repaint_after(std::time::Duration::from_secs(10));
+            }
+            let waiting = self.session.unsaved_sidecars();
+            if waiting > 0 && self.ui.sidecars_waiting == 0 {
+                self.toast_for(
+                    ctx,
+                    crate::i18n::tr_format!(
+                        "The XMP sidecars of {n} photos couldn't be written (is their folder offline?). LightCraft keeps trying.",
+                        n = waiting
+                    ),
+                    8.0,
+                );
+            } else if waiting == 0 && self.ui.sidecars_waiting > 0 {
+                self.toast(ctx, crate::i18n::tr("Wrote the XMP sidecars that were waiting"));
+            }
+            self.ui.sidecars_waiting = waiting;
+        }
         self.session.persist_if_dirty();
         panels::denoise::pump(self, ctx);
         model_setup::pump(self, ctx);

crates/ui-egui/src/state.rs

@@ -613,6 +613,11 @@ pub struct UiState {
     /// When the watched folder was last scanned (egui time).
     #[serde(skip)]
     pub auto_import_at: f64,
+    /// When the automatic XMP writes that failed were last tried again (egui time), and how many were waiting then.
+    #[serde(skip)]
+    pub sidecar_retry_at: f64,
+    #[serde(skip)]
+    pub sidecars_waiting: usize,
     /// The develop control whose slider is being dragged (geometry sliders show a grid).
     #[serde(skip)]
     pub dragging_control: Option<String>,
@@ -1101,6 +1106,8 @@ impl Default for UiState {
             external_edits: Vec::new(),
             was_focused: true,
             auto_import_at: 0.0,
+            sidecar_retry_at: 0.0,
+            sidecars_waiting: 0,
             search: String::new(),
             focus_search: false,
             renaming_mask: None,

docs/parity-checklist.md

@@ -1,6 +1,6 @@
 # Lightroom parity checklist
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-14 · **Change:** minor (integration batch 35: KEYC-SELECTONLYACTIVE, Select Only Active Photo ⌘⇧D; LR-BEHAV-AUTOSAVE, damaged snapshots repaired on open; LR-EDIT-OPTICS-PROFILE, Nikon Z 6II / Z 8 / Z f in-file distortion; LRC-LIB-CATALOG-IMPORT, WAL-only catalogs open; LR-EXP-DIM, enlargements stop at 512 MP; LR-IMP-CAMERA-COVERAGE, Canon EOS RP CR3 verified; model folder retry) · **Target:** Adobe Lightroom Classic 15.5 / Lightroom 9.6
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-14 · **Change:** minor (LR-META-XMP: failed automatic sidecar writes are retried; integration batch 35: KEYC-SELECTONLYACTIVE, Select Only Active Photo ⌘⇧D; LR-BEHAV-AUTOSAVE, damaged snapshots repaired on open; LR-EDIT-OPTICS-PROFILE, Nikon Z 6II / Z 8 / Z f in-file distortion; LRC-LIB-CATALOG-IMPORT, WAL-only catalogs open; LR-EXP-DIM, enlargements stop at 512 MP; LR-IMP-CAMERA-COVERAGE, Canon EOS RP CR3 verified; model folder retry) · **Target:** Adobe Lightroom Classic 15.5 / Lightroom 9.6
 
 The measured, row-by-row checklist: one row per Lightroom feature, menu item and shortcut, what we
 have and what is missing. It answers *does the feature exist?* (feature breadth). Whether it is good
@@ -790,6 +790,7 @@ Latin stays upright. Advanced Japanese composition remains open. Regression cove
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-14 | patch | LR-META-XMP: automatic sidecar writes that fail (folder offline or read-only) wait and are written again once the files are reachable, with a notice (`cmd:library.retrySidecars`); status unchanged |
 | 2026-10-13 | patch | LR-VIEW-COMPARE, LRC-LIB-COMPARE: ⌘/Ctrl- and Shift-clicks on the filmstrip in Compare change the selection as in the grid; the two photos shown stay selected and the active photo is unchanged (#187); statuses unchanged |
 | 2026-10-13 | minor | KEYC-SELECTONLYACTIVE: Edit → Select Only Active Photo (⌘⇧D) lands as a new row; status 🟡 (headless-tested, native macOS menu path unverified) |
 | 2026-10-13 | patch | LRC-LIB-CATALOG-IMPORT: a catalog whose tables are all still in its `-wal` file (main file schema format 0) opens instead of failing as an unsupported schema format; status unchanged |

docs/whats-new.md

@@ -2,6 +2,12 @@
 
 ## 2026-10-14
 
+### XMP sidecars catch up after a network share comes back
+- With automatic XMP writing on, an edit to a photo whose folder can't be written (a network share that dropped
+  out, a folder that went read-only) used to be written only to the library, with a line in the log, so the sidecar
+  stayed behind the edit. LightCraft now says once that the sidecars are waiting, tries again every few seconds once
+  the files are reachable, and says when they're written. `library.retrySidecars` does it on request.
+
 ### Hard-edged Heal and Clone spots
 - A spot with Feather at 0 no longer draws black pixels exactly on its radius. This also fixes spots at 0% Opacity
   changing pixels along their edge. The hard edge now leaves pixels on the radius unchanged.